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Bruce Willis saved the Earth with a nuclear weapon in the 1998 film Armageddon, but the law would need to change for him to do it now.
President Donald Trump meets North Korean leader Kim Jong Un.
AP Photo/Evan Vucci
History shows that diplomacy takes time and many incremental steps forward, a diplomacy expert writes.
St Peter’s Square, 2014. The Pope benefits from a wide popularity especially in Europe, but does it really influence people’ decisions on political issues?
Alfredo Borba/Wikimedia
Pope Francis has been a staunch voice for a world free of nuclear weapons. But should he be involved in defence politics at all? And how does the Pope’s message resonate among the European public?
Saudi Arabia has many possible motives for pursuing nuclear power.
TTstudio/Shutterstock.com
Exporting nuclear technology is lucrative, but without strict safeguards, buyers could divert it into bomb programs. Why is Saudi Arabia shopping for nuclear power, and should the US provide it?
Donald Trump meets with Kim Jong Un in Singapore, 2018.
AP Photo/Evan Vucci
Relying only on sanctions against North Korea may not be a productive way to get the country to give up its nuclear arms. Offering relief and aid may be more effective.
Russian President Vladimir Putin, left, speaks to Defense Minister Sergei Shoigu.
Alexei Nikolsky, Sputnik, Kremlin Pool Photo via AP
A Cold War era treaty helped dismantle more than 2,500 missiles between the US and Russia.
A 3D rendering of a command centre interior.
(Shutterstock)
Nuclear command and control - the computer systems, networks and procedures - is at risk from cybersecurity threats.
Lay down your arms.
EPA/Yuri Kochetkov
A new strategy from the UN secretary general challenges the world to explain why it’s not doing more to defuse the nuclear threat.
North Korea leader Kim Jong Un and U.S. President Donald Trump shake hands.
AP Photo/Susan Walsh
The declaration was thin, but the meeting itself will have a significant impact on how Trump makes foreign policy decisions moving forward.
Kim Jong-un arrives in Singapore.
EPA/KCNA
Can decades of deadlock be broken by two of the world’s most unpredictable leaders?
EPA/Jeon Heon-kyun
A remarkable year on the Korean peninsula has been marked by both bitter enmity and genuine goodwill. Now, the tension is being ratcheted up again.
German troops near the front in 1915.
Wikimedia Commons
The spectacle of thousands of soldiers gassed to death in France announced to the world that a new class of weapons had arrived.
Mark Oliphant in 1939.
From a collection at the National Portrait Gallery, Canberra. Gift of Ms Vivian Wilson 2004
Australian scientist Mark Oliphant helped push the development of nuclear weapons during World War II but later riled at US attempts to keep the UK and others out of the nuclear arms race.
EPA/Peter McDiarmid
After decades of deadly enmity, Libya and the West made a major breakthrough on weapons of mass destruction. How?
Iranian demonstrators burn a picture of the U.S. President Donald Trump.
AP Photo/Vahid Salemi
Does the work of the international agency responsible for verifying whether Iran was in compliance with the deal matter to the US?
He said he’d do it, and he has.
Michael Reynolds/EPA
Iran is a dangerous mischief-maker in the Middle East – but scrapping the nuclear deal will probably make things worse.
An International Atomic Energy Agency inspector at Iran’s Natanz facility, 2014.
AP Photo/IRNA, Kazem Ghane
Who do you call when there’s a nuclear crisis? The International Atomic Energy Agency, unless the crisis involves North Korea – then things get complicated.
Netanyahu “exposes” Iran.
EPA/Jim Hollander
Israel’s prime minister failed to undermine the validity of Iran’s nuclear deal, and instead ended up demonstrating just how important it is.
“Have you read The Art of the Deal? Nor have I.”
EPA
Donald Trump has always traded on his image as a master dealmaker – but many deals have been done with North Korea before.
EPA/Korea Summit Press Pool
The astonishing sight of two Korean leaders crossing the border that divides them is just a first step.